All files / lib/internal/perf performance.js

98.25% Statements 225/229
85% Branches 17/20
88.88% Functions 8/9
98.25% Lines 225/229

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 23040x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x     40x 40x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 40x 40x 1x 1x 1x 1x 1x 1x 1x 40x 22x 22x 5x 5x 21x 21x 22x 40x 15x 15x 2x 2x 15x 15x 40x 4x 4x     4x 4x 40x 12x 12x 12x 40x 36x 36x 1x 1x 35x 35x 36x 40x 25x 25x 1x 1x 24x 24x 25x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 40x 6504x 6504x 6504x 6504x 6504x 6504x 6504x 6504x 40x 40x 40x 40x 40x  
'use strict';
 
const {
  ObjectDefineProperty,
  ObjectDefineProperties,
  ObjectSetPrototypeOf,
} = primordials;
 
const {
  codes: {
    ERR_ILLEGAL_CONSTRUCTOR,
    ERR_MISSING_ARGS
  }
} = require('internal/errors');
 
const {
  EventTarget,
} = require('internal/event_target');
 
const { now } = require('internal/perf/utils');
 
const { markResourceTiming } = require('internal/perf/resource_timing');
 
const {
  mark,
  measure,
  clearMarkTimings,
} = require('internal/perf/usertiming');
const {
  clearEntriesFromBuffer,
  filterBufferMapByNameAndType,
} = require('internal/perf/observe');
 
const { eventLoopUtilization } = require('internal/perf/event_loop_utilization');
const nodeTiming = require('internal/perf/nodetiming');
const timerify = require('internal/perf/timerify');
const { customInspectSymbol: kInspect } = require('internal/util');
const { inspect } = require('util');
 
const {
  getTimeOriginTimestamp
} = internalBinding('performance');
 
class Performance extends EventTarget {
  constructor() {
    throw new ERR_ILLEGAL_CONSTRUCTOR();
  }
 
  [kInspect](depth, options) {
    if (depth < 0) return this;
 
    const opts = {
      ...options,
      depth: options.depth == null ? null : options.depth - 1
    };
 
    return `Performance ${inspect({
      nodeTiming: this.nodeTiming,
      timeOrigin: this.timeOrigin,
    }, opts)}`;
  }
}
 
function toJSON() {
  return {
    nodeTiming: this.nodeTiming,
    timeOrigin: this.timeOrigin,
    eventLoopUtilization: this.eventLoopUtilization()
  };
}
 
function clearMarks(name) {
  if (name !== undefined) {
    name = `${name}`;
  }
  clearMarkTimings(name);
  clearEntriesFromBuffer('mark', name);
}
 
function clearMeasures(name) {
  if (name !== undefined) {
    name = `${name}`;
  }
  clearEntriesFromBuffer('measure', name);
}
 
function clearResourceTimings(name) {
  if (name !== undefined) {
    name = `${name}`;
  }
  clearEntriesFromBuffer('resource', name);
}
 
function getEntries() {
  return filterBufferMapByNameAndType();
}
 
function getEntriesByName(name) {
  if (arguments.length === 0) {
    throw new ERR_MISSING_ARGS('name');
  }
  name = `${name}`;
  return filterBufferMapByNameAndType(name, undefined);
}
 
function getEntriesByType(type) {
  if (arguments.length === 0) {
    throw new ERR_MISSING_ARGS('type');
  }
  type = `${type}`;
  return filterBufferMapByNameAndType(undefined, type);
}
 
class InternalPerformance extends EventTarget {}
InternalPerformance.prototype.constructor = Performance.prototype.constructor;
ObjectSetPrototypeOf(InternalPerformance.prototype, Performance.prototype);
 
ObjectDefineProperties(Performance.prototype, {
  clearMarks: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: clearMarks,
  },
  clearMeasures: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: clearMeasures,
  },
  clearResourceTimings: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: clearResourceTimings,
  },
  eventLoopUtilization: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: eventLoopUtilization,
  },
  getEntries: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: getEntries,
  },
  getEntriesByName: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: getEntriesByName,
  },
  getEntriesByType: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: getEntriesByType,
  },
  mark: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: mark,
  },
  measure: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: measure,
  },
  nodeTiming: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: nodeTiming,
  },
  // In the browser, this function is not public.  However, it must be used inside fetch
  // which is a Node.js dependency, not a internal module
  markResourceTiming: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: markResourceTiming,
  },
  now: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: now,
  },
  timerify: {
    __proto__: null,
    configurable: true,
    enumerable: false,
    value: timerify,
  },
  // This would be updated during pre-execution in case
  // the process is launched from a snapshot.
  // TODO(joyeecheung): we may want to warn about access to
  // this during snapshot building.
  timeOrigin: {
    __proto__: null,
    configurable: true,
    enumerable: true,
    value: getTimeOriginTimestamp(),
  },
  toJSON: {
    __proto__: null,
    configurable: true,
    enumerable: true,
    value: toJSON,
  }
});
 
function refreshTimeOrigin() {
  ObjectDefineProperty(Performance.prototype, 'timeOrigin', {
    __proto__: null,
    configurable: true,
    enumerable: true,
    value: getTimeOriginTimestamp(),
  });
}
 
module.exports = {
  InternalPerformance,
  refreshTimeOrigin
};